What are the general circumstances of inverter compressor controller failure?

Release Time:

2022-06-14 10:00

There are many reasons for the failure of the inverter compressor controller, which are mainly divided into internal and external causes. 1 The impact of the installation environment and prevention Because the inverter is an electronic device, it has strict requirements on the environment. The impact of the environment on the inverter can also be seen in the product manual.

What are the general circumstances of inverter compressor controller failure?

1. The reason for the failure of the inverter compressor controller has a lot to do with the production environment, mainly including the following points:

1. Corrosive gas is the cause of inverter failure. Corrosive gases exist in the workshop of some chemical manufacturers. These gases may be one of the reasons for the failure of the inverter. Details are as follows:

(1) The failure of the inverter compressor controller is caused by the toggle switch and the poor contact of the relay caused by corrosive gas.

(2) Corrosive gas causes short circuit between crystals, resulting in inverter failure.

(3) The main circuit is short-circuited due to terminal corrosion, causing inverter failure.

(4) inverter fault caused by short circuit between components caused by circuit board corrosion.

2. Metal and other conductive dust, dust caused by inverter failure. Such factors that lead to inverter failure mainly exist in mining, cement processing, construction sites and other large dust production enterprises.

(1) Excessive conductive dust such as metal causes the main circuit to be short-circuited, resulting in inverter failure.

(2) The temperature of the heat sink is too high to cause tripping and burning, resulting in inverter failure.

3. Dew, humidity, humidity, and high temperature cause inverter failure. These factors that cause the failure of the inverter are mainly caused by the weather or the special environment of the place of use.

(1) moisture discoloration, resulting in poor contact, causing inverter failure.

(2) The inverter compressor controller tripped due to high temperature and overheating.

(3) the main circuit board copper plate between damp fire phenomenon, resulting in inverter failure.

(4) moisture leads to electrical corrosion of the internal resistance of the inverter, and disconnection leads to inverter failure.

(5) condensation inside the insulation paper, causing discharge breakdown phenomenon, resulting in inverter failure.

4. The inverter failure caused by human factors is mainly due to inaccurate selection and failure to adjust the parameters to the use state.

5. Inaccurate inverter selection will cause the inverter to overload and cause inverter failure.

6. The parameters are not adjusted to the use state, so that the inverter often trips over-current, over-voltage and other protections, resulting in premature aging and failure of the inverter.

The outdoor unit has the main power supply, the frequency conversion module, the computer chip board and its auxiliary circuit, and the maintenance difficulty is far greater than that of the ordinary air conditioner. Therefore, when judging the fault, the fault self-checking function should be used as much as possible.

If the indoor unit has a fault code display, fault judgment and maintenance can be carried out according to the fault code during maintenance. It should be noted that in addition to the parts prompted by the fault code, the relevant circuits are also within the scope of fault inspection. For example, if the fault is displayed as a bad sensor, then the relevant circuits of the sensor, such as voltage dividing resistors, parallel capacitors, connectors and other components, are within the scope of inspection.

The above is the reason why the inverter compressor controller compiled by Xiaobian often fails. I hope I can provide you with a reference!